﻿ Python: Iterate a given list cyclically on specific index position - w3resource

# Python: Iterate a given list cyclically on specific index position

## Python List: Exercise - 181 with Solution

Write a Python program to iterate a given list cyclically at a specific index position.

Sample Solution:

Python Code:

``````def cyclically_iteration(lst,spec_index):
result = []
length = len(lst)
for i in range(length):
element_index = spec_index % length
result.append(lst[element_index])
spec_index += 1
return result

chars = ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h']
print("Original list:")
print(chars)
spec_index = 3
print("\nIterate the said  list cyclically on specific index position",spec_index,":")
print(cyclically_iteration(chars,spec_index))
spec_index = 5
print("\nIterate the said  list cyclically on specific index position",spec_index,":")
print(cyclically_iteration(chars,spec_index))
```
```

Sample Output:

```Original list:
['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h']

Iterate the said  list cyclically on specific index position 3 :
['d', 'e', 'f', 'g', 'h', 'a', 'b', 'c']

Iterate the said  list cyclically on specific index position 5 :
['f', 'g', 'h', 'a', 'b', 'c', 'd', 'e']
```

Pictorial Presentation: Flowchart: ## Visualize Python code execution:

The following tool visualize what the computer is doing step-by-step as it executes the said program:

Python Code Editor:

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## Python: Tips of the Day

Given a predicate function, fn, and a prop string, this curried function will then take an object to inspect by calling the property and passing it to the predicate:

Example:

```def tips_check_prop(fn, prop):
return lambda obj: fn(obj[prop])
check_age = tips_check_prop(lambda x: x >= 25, 'age')
user = {'name': 'Owen', 'age': 25}

print(check_age(user))
```

Output:

```True
```

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